The last line from pg_xlogdump of the last WAL file on the crashed standby server shows the following.
pg_xlogdump: FATAL: error in WAL record at DF/4CB95FD0: unexpected pageaddr DB/62B96000 in log segment 00000000000000DF0000004C, offset 12148736 I believe this means the standby server received WAL file out of order? But why did it crash? Is crashing normal behavior in case like this? Thanks, Seong